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Old November 19th, 2012, 08:23 AM
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Owen Jones
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Tune Resistor Location

I am preparing to install a Tornado EPROM and the checklist refers to a Tune Resistor that needs testing.

Can anyone advise wher it can be found? I have a resistor taped to the harness connected to the MAF in the picture, but i would like to get a positive ID!

Thanks!
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Old November 19th, 2012, 08:59 AM
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Yep that's it.
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Old November 19th, 2012, 11:07 AM
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Steve Maietta
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According to this link:
http://www.britishv8.org/articles/rover-14cux-efi.htm
that's not the tune resistor..


According to this link, check resistance btwn pin 5 and 27 on the ECU connector to find tune resistor value.
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Old November 19th, 2012, 11:16 AM
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Steve- thats a great link...thanks for the post!
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Old November 19th, 2012, 12:08 PM
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I didnt think NAS 90's had this mysterious tune resistor
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Old November 20th, 2012, 12:26 AM
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Owen Jones
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Quote:
Originally Posted by revtor View Post
According to this link:
http://www.britishv8.org/articles/rover-14cux-efi.htm
that's not the tune resistor..


According to this link, check resistance btwn pin 5 and 27 on the ECU connector to find tune resistor value.
Thanks Steve that is a great article on the CUX14 fuel injection system! It really clears up the folklore surrounding the 'Tuning Resistor' and actually points to the resistor in my picture an says that 'this is not the tuning resistor' but the Engine Speed Sensor Resistor. It goes on to add that no Tuning Resistors have been found on NAS Rovers fitted with the CUX14 injection system.

Excellent reading - and from a very credible US source.

Thanks for sharing!
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